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Why if I use the \documentclass{book} for examples, the following code work, and if i use classicthesis i get errors? Sorry for the lenght, but this is the MWE.

In the example the \textwidth founded, don't is applied, so I don't think that the stuff related to the margins are implicated in the errors. The problem is with the .aux file for me.




% 1 comment this: \input{\nameofthisfile.aux} line
% 2 compile
% 3 uncomment this: \input{\nameofthisfile.aux} line
% 4 compile

%                                    put here the name of this .tex file


\bool_new:N \g_has_run_bool
\tl_new:N \l_aw_text_tl
\int_new:N \l_aw_tot_int
\int_new:N \g_aw_tot_alph_int
\int_new:N \g_wid_space_int
\int_new:N \g_space_int
\fp_new:N \g_rat_space_int
\fp_new:N \g_aw_avg_width_fp
\dim_new:N \myalphabetwidth
\dim_new:N \mytextwidth
\input{\nameofthisfile.aux} %                                                           THIS LINE
\tl_const:Nn \c_aw_the_alphabet_tl {abcdefghijklmnopqrstuvwxyz}

% this can be changed to an evironment or renamed or whatever
\NewDocumentCommand {\avgwidthstart} {}

\NewDocumentCommand {\avgwidthend}{}{}

% Here is the environment version, using just "text" as a name is probably a bad idea.


\cs_new:Npn \aw_avg_width:w #1 \avgwidthend
    % if first run, then generate variables to be used
    \bool_if:NF \g_has_run_bool
        \tl_map_inline:Nn \c_aw_the_alphabet_tl
          \int_new:c {g_##1_int}
          \fp_new:c {g_rat_##1_fp}
          \fp_new:c {g_wid_##1_fp}
    \tl_set:Nn \l_aw_text_tl {#1}

    % this can be used rather than the preceding line to take capital 
    % letters into account, but is Slooooooow
    %\tl_set:Nx \l_aw_text_tl {\tl_expandable_lowercase:n {#1}}

    \int_set:Nn \l_aw_tot_int {\tl_count:N \l_aw_text_tl}
    \tl_map_function:NN \c_aw_the_alphabet_tl \aw_get_counts:n
    \deal_with_spaces:n {#1}
    \tl_map_function:NN \c_aw_the_alphabet_tl \aw_calc_ratios:n
    \tl_map_function:NN \c_aw_the_alphabet_tl \aw_calc_avg_width:n
    \fp_gset_eq:NN \g_aw_avg_width_fp \l_tmpa_fp
    \fp_zero:N \l_tmpa_fp

    % the dimension \myalphabetwidth gives the width of the alphabet based on your character freq,
    % can be accessed by \the\myalphabetwidth
    \dim_gset:Nn \myalphabetwidth {\fp_to_dim:n {\fp_eval:n {26*\g_aw_avg_width_fp}}}

    % the dimension \mytextwidth gives the recommended \textwidth based on 66 chars per line.
    % can be accessed by \the\mytextwidth
    \dim_gset:Nn \mytextwidth {\fp_to_dim:n {\fp_eval:n {66*\g_aw_avg_width_fp}}}
    \bool_gset_true:N \g_has_run_bool

    % and lastly print the content


\cs_new:Npn \aw_get_counts:n #1
    % make a temporary token list from the document body 
    \tl_set_eq:NN \l_tmpb_tl \l_aw_text_tl
    % remove all occurrences of the character
    \tl_remove_all:Nn \l_tmpb_tl {#1}
    % add to appropriate int the number of occurrences of that character in current block
    \int_set:Nn \l_tmpa_int {\int_eval:n{\l_aw_tot_int -\tl_count:N \l_tmpb_tl}}
    % add to appropriate int the number of occurrences of that character in current block
    \int_gadd:cn {g_#1_int} {\l_tmpa_int}
    % add this to the total
    \int_gadd:Nn \g_aw_tot_alph_int {\l_tmpa_int}

\cs_new:Npn \deal_with_spaces:n #1
    \tl_set:Nn \l_tmpa_tl {#1}
    % rescan body with spaces as characters
    \tl_set_rescan:Nnn \l_tmpb_tl {\char_set_catcode_letter:N \ }{#1}
    % find number of new characters introduced.  add to number of spaces and alph chars
    \int_set:Nn \l_tmpa_int {\tl_count:N \l_tmpb_tl -\tl_count:N \l_tmpa_tl}
    \int_gadd:Nn \g_space_int {\l_tmpa_int}
    \int_gadd:Nn \g_aw_tot_alph_int {\l_tmpa_int}
    % since this comes after the rest of chars are dealt with, tot_alph is final total
    \fp_set:Nn \g_rat_space_fp {\g_space_int/\g_aw_tot_alph_int}
    % get width of space and use it.  obviously space is stretchable, so i'll assume
    % that the expansions and contractions cancel one another over large text.  is this
    % a terrible assumption???
    \hbox_set:Nn \l_tmpa_box {\ }
    \fp_gset:Nn \g_wid_space_fp {\dim_to_fp:n {\box_wd:N \l_tmpa_box}}
    \fp_add:Nn \l_tmpa_fp {\g_wid_space_fp*\g_rat_space_fp}

\cs_new:Npn \aw_calc_ratios:n #1
    % divide number of occurrences of char by total alphabetic chars
    \fp_gset:cn {g_rat_#1_fp}{{\int_use:c {g_#1_int}}/\g_aw_tot_alph_int}

\cs_new:Npn \aw_calc_avg_width:n #1
    % only need to find char widths once
    \bool_if:NF \g_has_run_bool
        % find width of char box
        \hbox_set:Nn \l_tmpa_box {#1}
        \fp_gset:cn {g_wid_#1_fp}{\dim_to_fp:n {\box_wd:N \l_tmpa_box}}
    % multiply it by char frequency and add to avg width
    \fp_add:Nn \l_tmpa_fp {{\fp_use:c {g_wid_#1_fp}}*{\fp_use:c {g_rat_#1_fp}}}
% This part is just for fun. Delete it and the showtable command from the document if
% it isn't wanted
    \settowidth{\alphabet}{\normalfont abcdefghijklmnopqrstuvwxyz}%
\tl_new:N \l_aw_tab_rows_tl
\seq_new:N \g_aw_theor_rats_seq
\seq_new:N \g_aw_the_alphabet_seq

\seq_gset_split:Nnn \g_aw_theor_rats_seq {,}

\NewDocumentCommand {\showtable}{}

\cs_generate_variant:Nn \seq_set_split:Nnn {NnV}
\cs_new:Npn \aw_make_table:
      \seq_set_split:NnV \g_aw_the_alphabet_seq {} \c_aw_the_alphabet_tl
      %takes corresponding letter/theoretical ratio pairs from sequences and applies function
      \seq_mapthread_function:NNN \g_aw_the_alphabet_seq \g_aw_theor_rats_seq \aw_generate_row:nn
        Total\,characters\,=\,\fp_eval:n {\g_aw_tot_alph_int}
      \sisetup{round-mode = places,round-precision = 5,output-decimal-marker={,},table-format = 3.5}
        {Average\,\texttt{\textbackslash textwidth}}&{Average\,character\,width}&{Average\,alphabet\,width}&{Alphabet\,width}\\
        \the\mytextwidth&\fp_eval:n {round(\g_aw_avg_width_fp,5)}pt&\the\myalphabetwidth&\the\alphabet\\
      \,\texttt{\textbackslash textwidth}&=\frac{\fp_eval:n {\g_aw_tot_alph_int}\cdot \fp_eval:n {round(\g_aw_avg_width_fp,5)}\mathrm{pt}}{\fp_eval:n {\g_aw_tot_alph_int}/66}=\fp_eval:n {\g_aw_tot_alph_int*{round(\g_aw_avg_width_fp,5)}/({\g_aw_tot_alph_int}/66)}\mathrm{pt}\\
      \mathrm{Total\,line\,type}&=\frac{\fp_eval:n {\g_aw_tot_alph_int}\cdot \fp_eval:n {round(\g_aw_avg_width_fp,5)}\mathrm{pt}}{\fp_eval:n {\g_aw_tot_alph_int*{round(\g_aw_avg_width_fp,5)}/({\g_aw_tot_alph_int}/66)}\mathrm{pt}}=\fp_eval:n {\g_aw_tot_alph_int/66}\\
      \mathrm{Characters\,for\,line\,type}&=\frac{\fp_eval:n {round(\g_aw_avg_width_fp,5)}\mathrm{pt}}{\fp_eval:n {\g_aw_tot_alph_int*{round(\g_aw_avg_width_fp,5)}/({\g_aw_tot_alph_int}/66)}\mathrm{pt}}=\fp_eval:n {\fp_eval:n {(\g_aw_tot_alph_int*{round(\g_aw_avg_width_fp,5)}/({\g_aw_tot_alph_int}/66))/round(\g_aw_avg_width_fp,5)}}
      \sisetup{round-mode = places,round-precision = 5,output-decimal-marker={,},table-format = 3.5}
        spaces&\fp_eval:n {\g_rat_space_fp*100}\%&19.18182\%&\fp_eval:n {{\g_rat_space_fp*100-19.18182}}\%\\
        \tl_use:N \l_aw_tab_rows_tl

\cs_new:Npn \aw_generate_row:nn #1#2
      \tl_put_right:Nn \l_aw_tab_rows_tl {#1&}
      \tl_put_right:Nx \l_aw_tab_rows_tl {\fp_eval:n {100*{\fp_use:c {g_rat_#1_fp}}}\%&}
      \tl_put_right:Nn \l_aw_tab_rows_tl {\fp_eval:n{100*{#2}}\%&}
      \tl_put_right:Nx \l_aw_tab_rows_tl {\fp_eval:n {{\fp_use:c {g_rat_#1_fp}*100-\fp_eval:n {#2}*100}}\%}
      \tl_put_right:Nn \l_aw_tab_rows_tl {\\}



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Can you explain again what your problem is? Your example runs without errors here. – Stephan Lehmke Sep 2 '12 at 18:38
@StephanLehmke really do you have not errors? – FormlessCloud Sep 2 '12 at 19:33
up vote 4 down vote accepted

The real problem is in the .aux file you're inputting. You find there commands like

\@writefile{toc}{\vspace {-\cftbeforechapskip }}
\@writefile{lof}{\deactivateaddvspace  }
\@writefile{lot}{\deactivateaddvspace  }

That means, the .aux file expects @ to be a letter.

Moving \makeatletter (which you're using anyway) upward before \input{\nameofthisfile.aux} makes the error go away.

btw, \jobname is set by the system to the name of the input file.

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